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Mine whole-tailing alkali binding material bond filling material

A technology of cemented filling materials and alkali cemented materials, which is applied in the field of cemented filling materials for mine tailings alkali cemented materials

Active Publication Date: 2013-04-17
郑州工大高新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the full tailings cemented filling material in the mine must meet the transportation conditions and strength requirements (28d compressive strength≧2MPa), and the cement content is too large (the cement content is about 200kg per 1 cubic meter of filling material, that is, the cement accounts for 13% of the solid content. above), the cost of filling materials is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A cemented filling material of mine tailings alkali cementitious material, which is made by mixing alkaline activator, industrial waste residue containing vitreous body, whole tailings sand, and water, and its mass ratio is: alkaline activator: industrial waste slag containing vitreous body Waste slag: whole tailings: water = 10: 10: 980: 150; the alkaline activator is a mixture of alkali metal (sodium, potassium) hydroxide and its soluble silicate; the industrial waste slag containing vitreous body is Vitreous granulated blast furnace slag powder with a fineness of 450m 2 / kg; said water is city tap water or water that does not affect the performance of filling materials. Stir the alkaline activator, industrial waste slag containing vitreous body, whole tailings and water evenly according to the above ratio to form a mine full tailings composite alkali cementitious filling material.

[0014] According to the corresponding standards, the properties of the mine tailings...

Embodiment 2

[0018] A cemented filling material of mine tailings alkali cementitious material, which is made by mixing alkaline activator, industrial waste residue containing vitreous body, whole tailings sand, and water, and its mass ratio is: alkaline activator: industrial waste slag containing vitreous body Waste slag: whole tailings: water = 20: 30: 950: 250; the alkaline activator is a mixture of alkali metal (sodium, potassium) hydroxide and its soluble silicate; the industrial waste containing vitreous is vitreous Steel slag powder, copper slag powder and fly ash are mixed in any proportion, with a fineness of 400m 2 / kg; the whole tailings are ferrosilicon whole tailings; the water is urban tap water or water that does not affect the performance of filling materials. Stir the alkaline activator, industrial waste slag containing vitreous body, whole tailings and water evenly according to the above ratio to form a cemented filling material of mine tailings alkali cementitious materia...

Embodiment 3

[0023] A cemented filling material of mine tailings alkali cementitious material, which is made by mixing alkaline activator, industrial waste residue containing vitreous body, cement, whole tailings sand, and water, and its mass ratio is: alkaline activator: vitreous body Industrial waste residue: cement: whole tailings: water=30:70:20:880:350; the alkaline activator is a mixture of alkali metal (sodium, potassium) hydroxide and its soluble silicate; The industrial waste slag containing vitreous body mentioned above is formed by mixing granulated blast furnace slag powder, steel slag powder, copper slag powder, fly ash and other industrial waste slag containing vitreous body in any proportion, with a fineness of 300m 2 / kg; the cement is any one of China’s six general-purpose Portland cement, sulphoaluminate cement, and high-alumina cement; the full tailings are mine aluminum tailings; the water is urban tap water or Water that does not affect the performance of the filling m...

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Abstract

The invention discloses a mine whole-tailing alkali binding material bond filling material, which is formed by mixing an alkali exciting agent, industrial waste residues containing glass bodies, cement, whole tailings and water, a mass ratio of the alkali exciting agent, the industrial waste residues containing glass bodies, the cement, the whole tailings to water is (10-30): (10-70): (0-20): (880-980): (150-350). According to the invention, the alkali exciting agent enables silicon aluminum in industrial waste residue powder containing glass bodies and natural silicon aluminum mineral powder in the whole tailings to be subjected to depolymerization, migration and repolymerization, so that the filling body strength can be greatly improved, then the mixing amount of the cement is substantially reduced or the requirement of the mine filling material performance can be met without mixing cement, therefore, the cost of the filling material is lowered; and meanwhile, the industrial waste residues containing the glass bodies such as granulated blast furnace slag powder, steel slag powder, copper slag powder, coal ash and the like can be fully utilized, so that the waste materials are changed into things of value, the waste residue pollution is reduced, and the environment protection is facilitated.

Description

technical field [0001] The invention relates to a mine tailings alkali cementing material cemented filling material. Background technique [0002] Mine full tailings cemented filling method is a new type of mining technology, that is, the ore mined in the mine, the waste after refining useful metals (that is, full tailings) plus a curing agent (that is, cement), and then fill it into the goaf area method. At present, the mine tailings cemented filling material is mixed uniformly with the whole tailings, general-purpose Portland cement, and water in proportion, and then sent to the underground mining site through self-flowing pipelines or pressurized pumps. At present, the full tailings cemented filling material in the mine must meet the transportation conditions and strength requirements (28d compressive strength≧2MPa), and the cement content is too large (the cement content is about 200kg per 1 cubic meter of filling material, that is, the cement accounts for 13% of the so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B28/04C04B22/08
Inventor 郑娟荣赵振波栗海玉
Owner 郑州工大高新材料科技有限公司
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